Highlights

Ambarella A9SE75 DSP
Ambarella's new generation of high performance and ultra low-power consumption A9SE75 chip. Support H.264 encoding, low power consumption even at 4K/30fps, blu-ray video, operating temperature at -20 to 85 centigrade.

Sony IMX377 12MP 1/2.3" Sensor
Don’t get irritated as the sensor of the first Yi Action Camera features the larger 16 MP Sony Exmor IMX206 sensor. The IMX377 is faster and enables the new model to shoot 4K video!

With a normal camera, the user must manually adjust the parameters according to different light conditions. YI 4K Action Camera makes it easy for you, it senses the change of the light condition with CMOS, and ISP processor will adjust the frame rate and parameters automatically and to produce the highest image quality at low light.

Only for Photo Mode and Timer Mode, which determines the length of time needed to open the shutter.
Shutter settings: Auto, 2s, 5s, 10s, 20s, 30s
Shooting speed: 1/4096s to 30s

Self-defined IQ parameters for demanding customers

YI 4K Action Camera has multiple high-level settings such as shutter at an exposure time of 30 seconds; Exposure Value compensation setting (EV), Setting of level of sensitivity (ISO); Metering Mode; White Balance (WB); etc. Together with the choice of 9 shooting modes, you can make impressive work like a professional photographer.

WB (White Balance)

Users can adjust the white balance settings to change the overall color of the video or photo.

Change the camera photosensitivity in low light environmental conditions to enhance the brightness for the video or photo. In low light environmental conditions, the higher the ISO value, the brightness the captured video or photo,the greater the signal noise, grainy strong, and vice-versa.

Others

ISO for Video

Resulting Video Quality

Auto (Default)

Automatically adjusts the sensitivity according to the environmental conditions

400

Darker video in low light, minimum image noise

1600

Moderately bright video in low light, moderate image noise

6400

Brighter video in low light, highest image noise

ISO for Photo

Resulting Photo Quality

Auto (Default)

Automatically adjusts the sensitivity according to the environmental conditions

100

Bright photo in outdoor daylight, minimal image noise

200

Bright photo in indoor lighting, marginal image noise

400

Darker photo in low light, moderate image noise

800

Darker photo in very low light, increased image noise

EV (Exposure Value compensation)

It influences the brightness of the video or photo. When shooting in a contrasting light environmental conditions, you can adjust this parameter to control the brightness of the video or photo. Value adjustment will increase the brightness of the video or photo based on the default basis.
-2.0, -1.5, -1.0, -0.5, 0(Default), +0.5, +1.0, +1.5, +2.0

YI 4K Action Camera records stereo sound in 48kHz, with dual microphones. It optimizes the sound collection and can provide good audio quality even at large outdoor sport events. With AAC Dolby encoder, it records every detail of the sound.

Highlights

Ambarella A9SE75 DSP
Ambarella's new generation of high performance and ultra low-power consumption A9SE75 chip. Support H.264 encoding, low power consumption even at 4K/30fps, blu-ray video, operating temperature at -20 to 85 centigrade.

Sony IMX377 12MP 1/2.3" Sensor
Don’t get irritated as the sensor of the first Yi Action Camera features the larger 16 MP Sony Exmor IMX206 sensor. The IMX377 is faster and enables the new model to shoot 4K video!

With a normal camera, the user must manually adjust the parameters according to different light conditions. YI 4K Action Camera makes it easy for you, it senses the change of the light condition with CMOS, and ISP processor will adjust the frame rate and parameters automatically and to produce the highest image quality at low light.

Only for Photo Mode and Timer Mode, which determines the length of time needed to open the shutter.
Shutter settings: Auto, 2s, 5s, 10s, 20s, 30s
Shooting speed: 1/4096s to 30s

Self-defined IQ parameters for demanding customers

YI 4K Action Camera has multiple high-level settings such as shutter at an exposure time of 30 seconds; Exposure Value compensation setting (EV), Setting of level of sensitivity (ISO); Metering Mode; White Balance (WB); etc. Together with the choice of 9 shooting modes, you can make impressive work like a professional photographer.

WB (White Balance)

Users can adjust the white balance settings to change the overall color of the video or photo.

Change the camera photosensitivity in low light environmental conditions to enhance the brightness for the video or photo. In low light environmental conditions, the higher the ISO value, the brightness the captured video or photo,the greater the signal noise, grainy strong, and vice-versa.

Others

ISO for Video

Resulting Video Quality

Auto (Default)

Automatically adjusts the sensitivity according to the environmental conditions

400

Darker video in low light, minimum image noise

1600

Moderately bright video in low light, moderate image noise

6400

Brighter video in low light, highest image noise

ISO for Photo

Resulting Photo Quality

Auto (Default)

Automatically adjusts the sensitivity according to the environmental conditions

100

Bright photo in outdoor daylight, minimal image noise

200

Bright photo in indoor lighting, marginal image noise

400

Darker photo in low light, moderate image noise

800

Darker photo in very low light, increased image noise

EV (Exposure Value compensation)

It influences the brightness of the video or photo. When shooting in a contrasting light environmental conditions, you can adjust this parameter to control the brightness of the video or photo. Value adjustment will increase the brightness of the video or photo based on the default basis.
-2.0, -1.5, -1.0, -0.5, 0(Default), +0.5, +1.0, +1.5, +2.0

YI 4K Action Camera records stereo sound in 48kHz, with dual microphones. It optimizes the sound collection and can provide good audio quality even at large outdoor sport events. With AAC Dolby encoder, it records every detail of the sound.